I used to use CShell (csh), which lets you make an alias that takes a parameter. The notation was something like
alias junk=\"mv \\\\!* ~/.Trash\"
You don't have to do anything, alias does this automatically.
For example, if i want to make git pull origin master parameterized, i can simply create an alias as follows:
alias gpull = 'git pull origin '
and when actually calling it, you can pass 'master' (the branch name) as a parameter, like this:
gpull master
//or any other branch
gpull mybranch